54185533 has 2 divisors, whose sum is σ = 54185534. Its totient is φ = 54185532.

The previous prime is 54185431. The next prime is 54185597. The reversal of 54185533 is 33558145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54140164 + 45369 = 7358^2 + 213^2 .

It is a cyclic number.

It is not a de Polignac number, because 54185533 - 2²¹ = 52088381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54185233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27092766 + 27092767.

It is an arithmetic number, because the mean of its divisors is an integer number (27092767).

Almost surely, 2^54185533 is an apocalyptic number.

It is an amenable number.

54185533 is a deficient number, since it is larger than the sum of its proper divisors (1).

54185533 is an equidigital number, since it uses as much as digits as its factorization.

54185533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36000, while the sum is 34.

The square root of 54185533 is about 7361.0823253106. The cubic root of 54185533 is about 378.4087033541.

The spelling of 54185533 in words is "fifty-four million, one hundred eighty-five thousand, five hundred thirty-three".